Q 1 2 0 1 6 E A R N I N G S R E P O R T

T W I T T E R

FORWARD-LOOKING STATEMENTS AND NON-GAAP INFORMATION

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This presentation and the accompanying shareholder letter and conference call contain “forward-looking” statements that are based on our management’s beliefs and assumptions and on information currently available to management. Forward-looking statements include statements about expected financial metrics, such as revenue, non-GAAP adjusted EBITDA, adjusted EBITDA margin, GAAP and non-GAAP share count, capital expenditures, and stock-based compensation, as well as non-financial metrics, such as average monthly active users, advertiser base and ad engagements, for the second quarter of 2016 and beyond. They also include statements about our strategies, product and business plans, the development of, investment in and demand for its products, product features and services, competitive position, industry environment, potential growth opportunities, and potential market opportunities.

Forward-looking statements include all statements that are not historical facts and can be identified by terms such as “anticipates,” “believes,” “could,” “seeks,” “estimates,” “intends,” “may,” “plans,” “potential,” “predicts,” “projects,” “should,” “will,” “would” or similar expressions and the negatives of those terms. Forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. For a discussion of these risks, you should read our filings with the Securities and Exchange Commission (SEC), including the Annual Report on Form 10-K for the year ended December 31, 2015, and the Quarterly Report on Form 10-Q we will file for the quarter ended March 31, 2016. In addition, please note that the date of this presentation is April 26, 2016, and any forward-looking statements contained herein are based on assumptions that we believe to be reasonable as of this date. Except as required by law, we assume no obligation to update these forward-looking statements publicly, or to update the reasons actual results could differ materially from those anticipated in the forward-looking statements, even if new information becomes available in the future.

This presentation includes certain non-GAAP financial measures as defined by SEC rules. As required by Regulation G, we have provided a reconciliation of those measures to the most directly comparable GAAP measures, which is available in the Appendix.

A NOTE ABOUT METRICS

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The numbers of active users presented in our earnings materials are based on internal company data. While these numbers are based on what we believe to be reasonable estimates for the applicable period of measurement, there are inherent challenges in measuring usage and user engagement across our large user base around the world. For example, there are a number of false or spam accounts in existence on our platform. We have performed an internal review of a sample of accounts and estimated that false or spam accounts represented less than 5% of our monthly active users (MAUs) as of December 31, 2015 . In making this determination, we applied significant judgment, so our estimation of false or spam accounts may not accurately represent the actual number of such accounts, and the actual number of false or spam accounts could be higher than we have estimated. We are continually seeking to improve our ability to estimate the total number of spam accounts and eliminate them from the calculation of our active users. Spam accounts that we have identified are not included in the active user numbers presented in our earnings materials. We treat multiple accounts held by a single person or organization as multiple users for purposes of calculating our active users because we permit people and organizations to have more than one account. Additionally, some accounts used by organizations are used by many people within the organization. As such, the calculations of our active users may not accurately reflect the actual number of people or organizations using our platform.

Our metrics are also affected by applications that automatically contact our servers for regular updates with no action involved, and this activity can cause our system to count the users associated with such applications as active users on the day or days such contact occurs. As of December 31, 2015, less than 8.5% of users used third party applications that may have automatically contacted our servers for regular updates without any discernible additional user-initiated action. As such, the calculations of MAUs presented in our earnings materials may be affected as a result of automated activity.

In addition, our data regarding user geographic location for purposes of reporting the geographic location of our MAUs is based on the IP address or phone number associated with the account when a user initially registered the account on Twitter. The IP address or phone number may not always accurately reflect a user’s actual location at the time such user engaged with our platform.

We present and discuss the size of our audience and logged-out usage based on both internal metrics and data from Google Analytics, which measures unique visitors to our properties. We regularly review and may adjust our processes for calculating our internal metrics to improve their accuracy. Our measures of user growth and user engagement may differ from estimates published by third parties or from similarly-titled metrics of our competitors due to differences in methodology.

MONTHLY ACTIVE USERS(quarterly average, millions)

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65 65 66 65 65

236 239 241 241 245

302 304 307 305 310

Q1'15 Q2'15 Q3'15 Q4'15 Q1'16

+3%WW Y/Y

+4%INT’ L Y/Y

+0%US Y/Y

INTERNATIONAL

UNITED STATES

30%

6%

-39% -41%

-56%

Q1'15 Q2'15 Q3'15 Q4'15 Q1'16

5

32%

53%

165%153%

208%

Q1'15 Q2'15 Q3'15 Q4'15 Q1'16

Y/Y % CHANGE IN AD ENGAGEMENTS Y/Y % CHANGE IN COST PER AD ENGAGEMENT

MONETIZATION METRICS

QUARTERLY REVENUE($, millions)

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DATA LICENSING + OTHER

ADVERTISING

+36%TOTAL Y/Y

+34%DL &O Y/Y

+37%ADV Y/Y

% INTERNATIONAL 34% 36% 35% 35% 34%

$388$452

$513

$641

$531

$48

$50

$56

$70

$64

$436

$502

$569

$710

$595

Q1'15 Q2'15 Q3'15 Q4'15 Q1'16

QUARTERLY ADVERTISING REVENUEBY GEOGRAPHY

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INTERNATIONAL

UNITED STATES

$252$286

$329

$410$343

$136

$166

$184

$230

$188$388

$452

$513

$641

$531

Q1'15 Q2'15 Q3'15 Q4'15 Q1'16

+36%U. S. Y/Y

+38%INT’ L Y/Y

+37%WW Y/Y

($, millions)

$104$120

$142

$191$180

Q1'15 Q2'15 Q3'15 Q4'15 Q1'16

QUARTERLY ADJUSTED EBITDA

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+73%Y/Y

% OFREVENUE

24% 24% 25% 27% 30%

Note: Adjusted EBITDA is defined as net loss adjusted to exclude stock-based compensation expense, depreciation and amortizationexpense, interest and other expenses, provision (benefit) for income taxes, and restructuring charges. See Appendix for a reconciliation of net loss to Adjusted EBITDA.

($, millions)

A P P E N D I X

ADJUSTED EBITDA RECONCILIATION

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RECONCILIATION OF NET LOSS TO ADJUSTED EBITDA

Three months ended

Mar 31, 2015 Jun 30, 2015 Sep 30, 2015 Dec 31, 2015 Mar 31, 2016

Net loss ($162,442) ($136,663) ($131,690) ($90,236) ($79,731)

Stock-based compensation expense 182,805 175,143 165,921 158,249 150,916

Depreciation and amortization expense

67,864 76,049 81,464 87,446 88,621

Interest and other expense (income) 15,194 25,132 23,291 19,652 18,587

Provision (benefit) for income taxes 632 (19,473) 3,162 3,405 2,028

Restructuring charges — — — 12,902 47

Adjusted EBITDA $104,053 $120,188 $142,148 $191,418 180,468

Note: Adjusted EBITDA is defined as net loss adjusted to exclude stock-based compensation expense, depreciation and amortizationexpense, interest and other expenses, provision (benefit) for income taxes, and restructuring charges.

($, thousands)

GAAP TO NON-GAAP RECONCILIATIONS

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($, thousands)

THREE MONTHS ENDED MARCH 31, 2016

GAAPStock-based

compensation expense

Amortization of acquired intangible

assetsRestructuring charges Non-GAAP

Cost of revenue $198,405 $7,968 $7,944 $1 $182,492

Research and development 155,794 75,579 64 10 80,141

Sales and marketing 236,171 46,101 4,722 32 185,316

General and administrative 63,267 21,268 — 4 41,995

THREE MONTHS ENDED MARCH 31, 2015

GAAPStock-based compensation

expenseAmortization of acquired

intangible assetsNon-GAAP

Cost of revenue $143,475 $12,886 $8,201 $122,388

Research and development 189,746 103,036 64 86,646

Sales and marketing 183,557 42,658 2,530 138,369

General and administrative 65,777 24,225 — 41,552